syzbot

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WARNING: CPU: 1 PID: 382 at arch/x86/kvm/x86.c:8135 emulator_pio_in_out+0x38a/0x490 arch/x86/kvm/x86.c:8135
Modules linked in:
CPU: 1 UID: 0 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 1113c6f757b896aae05d8aba828d71ec34ef4a9d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:emulator_pio_in_out+0x38a/0x490 arch/x86/kvm/x86.c:8135
Code: b6 04 38 84 c0 0f 85 ec 00 00 00 66 44 89 23 31 c0 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8c 04 71 04 cc e8 46 26 68 00 <0f> 0b e9 e6 fc ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ff fd ff
RSP: 0018:ffffc90001aef250 EFLAGS: 00010293
RAX: ffffffff811dc6da RBX: ffffc90001aef340 RCX: ffff8881157dcc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90001aef2b0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff812f9dd0 R12: 00000000000004d0
R13: 0000000000000001 R14: 0000000000000001 R15: ffff88811577caf8
FS:  0000555576a72500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000005200000c CR3: 0000000115b26000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 emulator_pio_out+0x41/0x150 arch/x86/kvm/x86.c:8223
 kvm_fast_pio_out arch/x86/kvm/x86.c:9317 [inline]
 kvm_fast_pio+0x141/0x5f0 arch/x86/kvm/x86.c:9387
 handle_io+0xfe/0x150 arch/x86/kvm/vmx/vmx.c:5405
 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6612 [inline]
 vmx_handle_exit+0x12c5/0x1b40 arch/x86/kvm/vmx/vmx.c:6629
 vcpu_enter_guest arch/x86/kvm/x86.c:11097 [inline]
 vcpu_run+0x481a/0x7260 arch/x86/kvm/x86.c:11258
 kvm_arch_vcpu_ioctl_run+0x101a/0x1aa0 arch/x86/kvm/x86.c:11582
 kvm_vcpu_ioctl+0x96f/0xee0 virt/kvm/kvm_main.c:4515
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f145a58eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe9433ddf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f145a7d5fa0 RCX: 00007f145a58eba9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f145a611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f145a7d5fa0 R14: 00007f145a7d5fa0 R15: 0000000000000003
 </TASK>
---[ end trace 0000000000000000 ]---